USED 1986 PROTH PSGS-2550AH

Proth 10" x 20" PSGS-2550AH Hydraulic Surface GrinderPrecision Hydraulic Performance | Industrial Toolroom GradeThe Proth PSGS-2550AH is a high-precision, horizontal-spindle surface grinder engineered for exceptional accuracy and surface finish. Built with a T-shaped base and heavily ribbed cast iron construction, this machine is designed to absorb vibration and eliminate internal stresses, making it a staple for precision toolrooms and production facilities.Key FeaturesPrecision Spindle Design: Features a cartridge-type spindle supported by P4 high-precision angular contact bearings. This ensures absolute minimal run-out (under 0.002 mm) and simplifies long-term maintenance.Dual-Axis Automation: Equipped with hydraulic longitudinal travel (X-axis) and automatic incremental cross-feed (Z-axis). The longitudinal speeds are steplessly variable for tailored material removal.Independent Hydraulic Station: The hydraulic pump and tank are isolated from the main casting to prevent thermal expansion and vibration from affecting the accuracy of the workpiece.Advanced Guideways: Utilizes a double-V track design for both the table and saddle, providing maximum support and smooth movement throughout the full travel range.Technical SpecificationsWorking Table Size: 10" x 20" (250 x 500 mm)Max. Table Travel: ~21.4" (Longitudinal) x 10.4" (Cross)Spindle Motor: 2 HP - 3 HP (Varies by vintage/market)Spindle Speed: 3,480 RPM (60Hz) / 2,900 RPM (50Hz)Standard Wheel Size: 7" x 1/2" x 1-1/4" (Up to 8" diameter)Machine Weight: ~3,000 lbs (Heavy-duty vibration dampening)AdvantagesMeehanite Castings: All major components are cast from high-grade Meehanite iron, annealed twice to remove metallurgical stress, ensuring the machine stays "true" for decades.Centralized Lubrication: Features a centralized automatic lubrication system for all slideways and lead screws, reducing wear and preventing the need for manual oiling.Surface Finish Quality: The combination of a precision-balanced spindle and massive structural rigidity allows for mirror-like finishes on hardened tool steels and exotic alloys.Operator Control: Ergonomically grouped controls include a fine-feed handwheel for the vertical axis, allowing for precise down-feed adjustments in increments as small as 0.0001".